Means for reinforcing concrete.



PATENTED JAN. 141 1908.,

E. G. DU MA'ZUEL. MEANS FOR REINPORCING CONCRETE APPLICATION TILED PBB.19, 1907.

2 SHEETS-SHEET 1 Fla. 3.

No. 876,471. PATENTED JAN. 14, 1908.

E. G. DU MAZUEL.

MEANS FOR REINFORGING' CONCRETE.- APPLIUATION FILED FEB. 10, 1907.

2 SHEETS-SHEET}.

A WITNESSES: M

a ti! r ca r es. 1

EDMOND G. DU MAZUEL, OF NEW YORK, Y.

MEANS FOR BEINFORCING CONCRETE.

T 0 all whom it may concern:

Be it known that I, EDMOND G. DU MAZUEL, a consulting engineer a pitizen of the United States, residing at NewYork city, in the county of New York and State of New York,- have invented an improved Means for Reinforcing Concrete, of which the following is a specification,

My invention relates to metal members to be used as sheet piles, or as a reinforcement for concrete and the like, to give the required area of metal .to reinfo ce' concrete slabs, beams, columns and other forms of concrete requiring reinforcement, and to give a maxi- -mum strength for a minimum. area of such reinforcement.

It has for its ob ect a metal member so shapedas to utilize all of the section of metal employed, and arranged so to all'o d the. necessary cross-sectional area of metal'fora given cross-sectional area of concrete; and to increase to the maximum the strength of said cross-section without necessitating the use of form work or special additional members such as spacing wires, rods, etc., also, to provide a construction for uniting or looking a number of such members in a ready and water-tight manner.

These objects'are attained by means of the construction illustrated in the accompanying drawings in which 1 i ,QFigure 1 is a general cross-sectional view of a slab of concrete for floors, roofs or Walls provided with my improved reinforcing members. Fig. 2 is a diagrammatic view illustrating the cross-sectional form of m improved reinforcing member. Fig. 3 is a perspective, view of the improved reinforcing member. Fig. 4 is a perspective view showing a method of securing the reinforcing member to a beam, girder, column or upright. Fig. 5 is a perspective view showing .two.reinforcing members joined together,

locking and overlapping each-other.

Similar characters of reference designate corresponding parts throughout the several views.

Specification of Letters-Patent.

Application filed Februar 19 1907. Serial No. 858.261.

and bottoms of said corrugations. As shown' Patented Jan. 14, 1908 When lloors, roots, ceilings, flat or other arches are formed or composed of concrete, and the same is to be reinforced with my improved reinforcing members, these may then be placed from girder to girder, beam to beam', or from springingtospringing of said floors, roofs, flat or other arches, and on top and bottom ot the girders, beams or springings, as shown in Fig. 4, and the concrete or the i 'n eusua manner wi, ou ne-- like fi led m1 th 1 th t cessitating the use of forms.

. The-members M may be secured to beams uprights I and the like, I Fig. 4., by the use of a sharp V-shaped chisel, which, when driven in at the'corners or sides of flanges and the like against abutting grooves, will form a tongue or spur K over said corners or sides, ther el y locking the same. If stronger locking is de sired, Wire can be passed through the openings 0 thus formed and around the supports 1, thereby obtaining a'stro'nger and firmer hold. When more than one member is required, they can be joined together at the ends and. sides by springing one ontothe other, the ends of the members or their full side sets of reversed curves, as shownat J Figs. 1 and 5, thus making perfect watertight jointsz- 'lhese'niembers mayalso be securely locked together, referencebeing had to Fig. 5, by the use of a \I-shap'ed chisel which, when driven against the lowei' side of the members M, will cut out or form V- shaped tongues or spurs K that will bend over and secure the said members to one anothen. -VVhen used for columns, caissons,

piers, intakes, penstocks, and the like, the members, may in springing one or more around a required "form or shape, alsohe into the desired places and joined together in.

the manner already described. The me1nber M is ior'rugated and provides between tugres over the successive corrugations av contraction l3'il.O1-'

mediate of the top and hottoiii and of such proportion that one memher may be readily sprung one onto the other. The (ioi'istruction, further, insures the concrete filling bei l l I 1 ing securely held, and does away with the 1 The pitch S of the 1 curves or distance between the vertical con .1

ter lines on which are the (renters termines the degree of reversal of the curves. This pitch S is one-half of the pitch ol said corrugations, which latter pitch must be smaller than twice the depth (I ol the curves 1 or corrugations, being prel'erubly eleven eighths of the some to provide the most suitable contraction. lhe distance H also determines the resistance and opposing force Along lines (P t) at intersections oi line 1 in and by the reinforcing; memher ill, noted by the series or mltiludeof sm= :zrolo A, mid B,- Fig. 1. in lhe adjmreot nels, which are formed by the corr when these series of iheoreticzil, smh cretc beams :ict one against the other While a portion or the entire sectionol the reinforced concrete is subjected, to a stress. The depth d and pitch S of the curves being lixed as above described, the radii ll of the cow timious S-shztped reversed curves will he equal to one-quarter ol the ratio of the sum of the squares of the depth d and pitch H. to the depth (1"; the centers (1, C ol the cum s being located on the vertical center lines which determine the pitch, Although the corrugotions have been shown in cm. sec-- tion composed of portions of eirelcs tangent to one 2121 tl101, 'ul1 :mopproxinmtoz id simi' lar cil-ostrlictiori is possible in wl ich the cross-section of the corrugations are partial circles not tangent to'ohe :mothcr, out porz tious ol' circles united by a. short line tangent thereto.

r i t lhe cm struction ol my improved corrugate meihher possesses numerous :ulvzin prior ort such as, lor example, :ill'ordmg l'i ll value or oil the metal, in that the distribution ol the some is umlorm or symmetrical; eliminating all lorm work, and

migrations of which iorm spaces contracted iutermedietr ol the tops and bottoms of the corrugations. I V

' Reinforcing memhers for structures and the like consisting of oorru gated metal reinlm'cing members in cross section :1 series oi reversed or substazntiell -shuped moves, the corrugations of Whioi form spaces coiiirm' ted intermediate of the tops iind bottoms oi ie corrugations.

3. ft corrugated metal reinforcing mem her, in cross section a, series or reversed or SllliSljiHt-lnlll. ikfilltpfll curves, the pitch of the corrugations heing substantially less than twice their depth.

4. A. corrugated metal mcml'ier, in cross section 12- series of reversed or :oibstant'ially ifi slmped cmvos the ratio of the pitch of the cmrugathms to the depth" of some being eleven-eight hrs.

5. A structure comprising; series of corrueiih lmetnl reinforcing member in cross section :1 series of reversed or subs ontizilly h pod curves, the corrugations of which gated motel reinforcing momconcrete 7 lorm spaces Hmllfli llt l intermediate of the top and ljottoms r the corrugghtioiis; WlHI@- hers are sort one onto the h ll ymer h mutt preceding mid succeed; member to ght series hf lorm Zlcontinuous and water .i

momoers.

(i. l hecon'ibundion with it support, of a corruga ed metal reinforcing member in thereby rcducihg cost and skilled hthor; and

enabling :tll joints' to be ('mulil) sprung, the

cross section it series of reversed or substantially Ews'heperl curves, the corrugations of which form spaces contracted intermediate ol' the tops and l'ihttoms of tl ocorrugations; ml means to securh l't'id .eiiiber to said support. I

7; A structure comprising series of we rugoted meta -l reinforcing members in cross section fLfa'lflUS of reversed or suhsteotiallv ifs-sha l curves, the corrugations of which form spaces eontructed intermediate of the tops rind bottoi hy the mom re sprung one onto the next preceding; memher to term a contimioiis and \t'itiliFtlgllllseries of members, :iml'securiog spurs cut from some and integral lhermrritli. a

in lestimoo'r whereof, l have signed my name to this specilicolioi'i, in the presence of two sohscribine \x'ilncsses.

it. G. DU MAT/JUICE.

Wi messes:

of the corrugations, where 

